Ships navigating in a channel for two way traffic will suffer hydrodynamic effects due to the presence of other shipping traffic. As squat is an important issue for ships navigating with limited under keel clearance the sinkage and trim induced by ship-to-ship interactions can be of high importance. In order to investigate the influence of two ships sailing on parallel courses at different speeds a comprehensive captive model test program was carried out. A large number of parameters as ship type, ship dimensions, draft, water depth, lateral distance and speed were studied.
Apart from model tests two other methods were used to study squat induced by ship-to-ship interactions. The first method implies a RANSE-calculation of two container ships meeting in a channel with a lateral distance equal to a ship beam. The second method concerns a RTK measurement of ultra large container ships on the Western Scheldt meeting each other.

@inproceedings{1988743,
abstract = {Ships navigating in a channel for two way traffic will suffer hydrodynamic effects due to the presence of other shipping traffic. As squat is an important issue for ships navigating with limited under keel clearance the sinkage and trim induced by ship-to-ship interactions can be of high importance. In order to investigate the influence of two ships sailing on parallel courses at different speeds a comprehensive captive model test program was carried out. A large number of parameters as ship type, ship dimensions, draft, water depth, lateral distance and speed were studied.
Apart from model tests two other methods were used to study squat induced by ship-to-ship interactions. The first method implies a RANSE-calculation of two container ships meeting in a channel with a lateral distance equal to a ship beam. The second method concerns a RTK measurement of ultra large container ships on the Western Scheldt meeting each other.},
author = {Eloot, Katrien and Vantorre, Marc and Verwilligen, Jeroen and Prins, Hank and Hasselaar, Thijs WF and Mesuere, Martin},
booktitle = {2nd International conference on ship manoeuvring in shallow and confined water : ship to ship interaction : conference proceedings},
editor = {Pettersen, Bj{\o}rnar and Berg, Tor Einar and Eloot, Katrien and Vantorre, Marc},
isbn = {9781905040834},
language = {eng},
location = {Trondheim, Norway},
pages = {117--126},
publisher = {Royal Institution of Naval Architects},
title = {Squat during ship-to-ship interactions in shallow water},
year = {2011},
}